Mammillaria simplex var. parvimamma (Haw.) Lem., Cact. Gen. Sp. Nov.: 98. 1839 Mammillaria simplex var. parvimamma (Haw.) Lem., Cact. Gen. Sp. Nov.: 98. 1839is new combination for Mammillaria parvimamma Haw., Suppl. Pl. Succ.: 72. 1819Taxon for this nameMammillaria simplex var. parvimamma (Haw.) Lem.